PIMZOS.COM is the leading distributor of Madgetech products in Europe and we sell the full range. The Madgetech product line is a high-quality, standalone data logger range, which can work autonomously because the loggers work with battery power. All data loggers have special non-volatile memory to ensure your data is secure, even in case of an empty battery. Madgetech software is the best in its class and you can, among other things, create graphs of data and export to different file formats, such as Excel. Pay attention ! Most loggers require a data cable to connect to the PC. This is sold separately. Please note this with your online purchase.